An origin of 1/f fluctuations at a nonequilibrium phase transition

V.P. Koverda and V.N. Skokov

Physica A: Statistical Mechanics and its Applications, 1999, vol. 262, issue 3, 376-387

Abstract: We present the results of experimental study of an intensive source of wide-band 1/f noise whose generation appears in a system of two interacting nonequilibrium phase transitions. Such a process has been realized in the region of superposition of a superconductor–normal conductor phase transition on a liquid–vapor crisis transition in a boiling cooler. A mathematical model describing phase transitions in a dynamical system with two interacting order parameters, converting “white” noise into two stationary stochastic processes with 1/f and 1/f2 spectra has been suggested. The properties of model oscillations with 1/f spectrum are qualitatively adequate to those observed in experiment. The characteristic difference of model oscillations with a 1/f2 spectrum from classic random walks has also been noted.

Keywords: 1/f noise; Nonequilibrium phase transitions; High-temperature superconductor; Boiling; Stochastic equations (search for similar items in EconPapers)
Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:262:y:1999:i:3:p:376-387

DOI: 10.1016/S0378-4371(98)00407-5

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